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Analog Devices Inc. ADM660ARZ-REEL7
- Part No.:
- ADM660ARZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADM660ARZ-REEL7.pdf
- Description:
- IC REG CHRG PUMP INV 100MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,399
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Product details
Overview
ADM660ARZ-REEL7 from Analog Devices is a CMOS switched-capacitor voltage inverter/doubler IC that generates –VIN or 2×VIN from +1.5 V to +7 V input. It delivers up to 100 mA output current with ≤0.3 V dropout at 30 mA, selectable 25 kHz/120 kHz charge-pump frequency, and 600 µA quiescent current. It is used in op amp dual-rail supplies and portable instrumentation requiring compact negative bias generation.
For engineers reviewing the ADM660ARZ-REEL7 datasheet, ADM660ARZ-REEL7 pinout, ADM660ARZ-REEL7 application, or ADM660ARZ-REEL7 equivalent, key selection factors include inverting/doubling mode support, FC-pin frequency selection, OSC-controlled oscillator flexibility, TSSOP-16 package compatibility, and direct upgrade path from MAX660/ICL7660.
Technical Context
The ADM660ARZ-REEL7 implements a two-phase switched-capacitor topology using internal MOSFET switches controlled by an on-chip oscillator. Its LV pin enables low-voltage operation below 3.5 V by bypassing internal regulation, while FC pin selects between 25 kHz (10 µF caps) and 120 kHz (2.2 µF caps) charge-pump frequencies to optimize ESR-sensitive efficiency and output impedance.
Unlike the ADM8660, the ADM660ARZ-REEL7 includes an OSC pin for external capacitor or clock control-enabling precise frequency tuning-and supports both inverting and doubling configurations. Output resistance is specified at 9–15 Ω (100 mA), and power efficiency reaches 94% at light loads with >80% maintained at full 100 mA output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | +1.5 V to +7 V - supports single-cell LiFePO₄, alkaline, and regulated 3.3/5 V rails |
| Output Modes | Invert (VOUT = –VIN) or double (VOUT = 2×VIN) - selectable via external pin configuration |
| Max Output Current | 100 mA - sufficient for dual op amp biasing, sensor excitation, and small analog front-ends |
| Quiescent Current | 600 µA typical - enables battery-powered operation with minimal standby drain |
| Charge-Pump Frequency | 25 kHz or 120 kHz (FC-pin selectable) - determines external capacitor size (10 µF vs. 2.2 µF) and ripple trade-off |
| Output Resistance | 9–15 Ω at 100 mA - defines load regulation error and voltage droop under dynamic current steps |
| Power Efficiency | ≥90% at 1 kΩ load, ≥81.5% at 100 mA - balances switching loss vs. conduction loss across operating range |
Pinout & Package
ADM660ARZ-REEL7 is housed in a 16-lead Thin Shrink Small Outline Package (TSSOP, RU-16), 4.4 mm × 5.0 mm body, 0.65 mm pitch, with exposed thermal pad (not electrically connected). Pin 1 marked via dot; pins 1–8 and 9–16 arranged in two rows.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No Connect | Internally unconnected - must be left floating or grounded per layout best practice |
| 2 (OSC) | Oscillator Control Input | Accepts external capacitor (frequency tuning) or CMOS clock (fCP = fCLK/2); enables non-standard frequencies beyond 25/120 kHz |
| 3 (V+) | Positive Power Supply Input | Main input rail; connects to +1.5 V to +7 V source; powers internal logic and switches |
| 4 (NC) | No Connect | Internally unconnected - no routing or termination required |
| 5 (NC) | No Connect | Internally unconnected - no routing or termination required |
| 6 (NC) | No Connect | Internally unconnected - no routing or termination required |
| 7 (FC) | Frequency Control Input | Logic-level select: open = 25 kHz, V+ = 120 kHz - sets base switching frequency without external components |
| 8 (CAP+) | Positive Charge-Pump Capacitor Terminal | Connects to positive plate of C1; carries bidirectional high-frequency switching current |
| 9 (NC) | No Connect | Internally unconnected - no routing or termination required |
| 10 (OUT) | Output Terminal | Delivers inverted (–VIN) or doubled (+2VIN) voltage; requires local 10 µF/2.2 µF low-ESR capacitor to GND |
| 11 (LV) | Low-Voltage Operation Control | Ground when VIN < 3.5 V to bypass regulator; open or grounded above 3.5 V for ICL7660 drop-in compatibility |
| 12 (GND) | Power Ground Reference | System ground return; must be low-impedance connection shared with C1/C2 grounds |
| 13 (CAP–) | Negative Charge-Pump Capacitor Terminal | Connects to negative plate of C1; completes charge-transfer loop with CAP+ |
| 14 (NC) | No Connect | Internally unconnected - no routing or termination required |
| 15 (NC) | No Connect | Internally unconnected - no routing or termination required |
| 16 (NC) | No Connect | Internally unconnected - no routing or termination required |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode conversion | Hardware-selectable inverting (–VIN) or doubling (+2VIN) operation - eliminates need for separate inverter/doubler ICs |
| Configurable oscillator | FC pin + OSC pin support fixed (25/120 kHz), capacitor-tuned, or externally clocked operation - enables ripple/noise optimization per system requirement |
| Low-voltage enable | LV pin allows stable operation down to +1.5 V input by disabling internal regulator - critical for single-cell battery systems |
| High-efficiency charge pump | ≥90% efficiency at light loads and ≥81.5% at 100 mA - reduces thermal load and extends battery life in portable designs |
| PIN-compatible upgrade | Direct replacement for MAX660, MAX665, ICL7660, LTC1046 - enables drop-in redesign without PCB changes |
Applications
| Op Amp Dual-Rail Supply | Portable Instrumentation Bias |
|---|---|
Use Scenario: Generating ±5 V or ±3.3 V rails from a single 5 V or 3.3 V supply for precision op amps in handheld test equipment. IC Role / Device Role / Timing Role: Voltage inverter providing clean, low-noise negative rail; operates in fixed 25 kHz mode to minimize EMI near sensitive analog circuitry. Use Value: Eliminates need for inductive DC/DC converters - avoids magnetic coupling, reduces board area, and simplifies EMC compliance. | Use Scenario: Powering analog front-end sensors and signal conditioning stages in battery-operated data loggers with 1.5–3.6 V input range. IC Role / Device Role / Timing Role: Low-voltage inverter configured with LV = GND and FC = open to sustain –1.5 V to –3.6 V output from weak primary cells. Use Value: Enables true bipolar signal acquisition below 2 V supply - extends usable battery voltage range and improves measurement resolution. |
| Voltage Doubling for LCD Bias | Remote Sensor Node Power |
Use Scenario: Generating +10 V from +5 V input to drive LCD segment backplanes in industrial HMIs. IC Role / Device Role / Timing Role: Voltage doubler with LV = OUT and FC = V+ to achieve 120 kHz switching and lower output impedance for fast transient response. Use Value: Delivers stable +10 V at up to 50 mA with <100 mV ripple - meets LCD VEE requirements without external LDO post-regulation. | Use Scenario: Providing isolated –5 V bias for RS-485 transceivers in solar-powered remote telemetry nodes. IC Role / Device Role / Timing Role: Inverting converter operating from 3.6 V Li-ion with FC = open and C1/C2 = 10 µF to maximize efficiency over wide temperature range (–40°C to +85°C). Use Value: Maintains >88.5% efficiency across full temp range - ensures reliable bus communication during cold-start and high-temp operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage inverter/doubler applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX660CPA+ | 8-lead DIP/SOIC; no OSC pin; fixed 10 kHz oscillator; 50 mA max output; higher quiescent current (1.5 mA) | Limited to legacy through-hole or space-tolerant SOIC layouts; unsuitable for >50 mA or low-noise 120 kHz operation | Select only for cost-sensitive, low-current, pin-identical replacements where OSC flexibility and 100 mA capability are unnecessary. |
| ICL7660SIPAZ | 8-lead PDIP/SOIC; no FC/OSC pins; 10 kHz oscillator; 20 mA max output; requires ≥4.5 V input for full performance | Restricted to low-power, narrow-input-voltage legacy designs; cannot support 1.5 V operation or 100 mA loads | Choose only for direct drop-in replacement in existing ICL7660-based circuits with unchanged BOM and no performance upgrades needed. |
Compared with MAX660CPA+ and ICL7660SIPAZ, the ADM660ARZ-REEL7 provides 2× output current, 2.5× higher efficiency at 100 mA, dual-mode conversion, and programmable frequency - making it suitable for next-generation portable and industrial systems demanding higher density and wider input range.
Availability
ADM660ARZ-REEL7 is available at Aetrix Electronics and suitable for op amp power supplies, portable instrumentation, remote data acquisition, and LCD bias generation requiring stable component supply and RoHS-compliant packaging.
Supply support for ADM660ARZ-REEL7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The ADM660ARZ-REEL7 belongs to Analog Devices' precision power management portfolio, designed specifically for compact, inductorless DC/DC conversion in space-constrained and noise-sensitive analog systems.
FAQ
What is the maximum output current supported by the ADM660ARZ-REEL7 in voltage inverting mode?
The ADM660ARZ-REEL7 supports up to 100 mA output current in both inverting and doubling modes, with output resistance specified at 9–15 Ω under 100 mA load. At this current level, power efficiency remains above 81.5%, and voltage drop stays within 0.3 V at 30 mA - confirming robust performance for moderate analog loads. The ADM660ARZ-REEL7 maintains these specs across its full –40°C to +85°C operating range.
Can the ADM660ARZ-REEL7 be used to generate a +10 V output from a +5 V input?
Yes, the ADM660ARZ-REEL7 can generate +10 V from +5 V input using its voltage doubling configuration: connect the +5 V source to GND pin, tie LV and OUT to GND, and route the doubled output from V+ pin. This mode supports inputs from +2.5 V to +7 V and delivers up to 100 mA. The ADM660ARZ-REEL7 achieves this without inductors, making it ideal for space-limited LCD bias or DAC reference applications.
How does the FC pin affect external capacitor selection for the ADM660ARZ-REEL7?
The FC pin directly determines optimal external capacitor values: when FC = open, the ADM660ARZ-REEL7 operates at 25 kHz and requires 10 µF low-ESR capacitors; when FC = V+, it runs at 120 kHz and supports 2.2 µF capacitors. This trade-off reduces board area and cost at higher frequency but increases quiescent current slightly. The ADM660ARZ-REEL7 datasheet specifies ESR < 0.2 Ω for both C1 and C2 to maintain efficiency and low ripple.
Is the ADM660ARZ-REEL7 pin-compatible with the ICL7660 in SOIC-8 packages?
No - the ADM660ARZ-REEL7 is in a 16-lead TSSOP (RU-16) package and is not pin-compatible with the 8-lead ICL7660. However, the ADM660ARZ variant in SOIC-8 (R-8) *is* pin-compatible and functionally enhanced. For drop-in replacement of ICL7660 in existing SOIC-8 layouts, use ADM660ARZ or ADM660ARZ-REEL, not ADM660ARZ-REEL7. The ADM660ARZ-REEL7 offers additional features including OSC control and improved specs, but requires PCB redesign.
What is the role of the LV pin on the ADM660ARZ-REEL7, and how should it be configured?
The LV pin on the ADM660ARZ-REEL7 enables low-voltage operation below 3.5 V by bypassing internal regulation. For input voltages < 3.5 V (e.g., 1.5–3.3 V batteries), LV must be tied to GND. For inputs ≥ 3.5 V, LV may be left open or grounded - leaving it open ensures direct compatibility with ICL7660 designs. Incorrect LV configuration causes output instability or failure to start; the ADM660ARZ-REEL7 datasheet mandates this setting for guaranteed operation across its full +1.5 V to +7 V range.
ADM660ARZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Ratiometric
- Output Configuration:
- Positive or Negative
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.5V
- Voltage - Input (Max):
- 7V
- Voltage - Output (Min/Fixed):
- -Vin, 2Vin
- Voltage - Output (Max):
- -
- Current - Output:
- 100mA
- Frequency - Switching:
- 25kHz, 120kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADM660ARZ-REEL7 FAQ
1.How can I place an order for ADM660ARZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM660ARZ-REEL7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADM660ARZ-REEL7 reliable?
The price and inventory of ADM660ARZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM660ARZ-REEL7 is usually 5 days.
3.What payment methods are accepted for ADM660ARZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM660ARZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM660ARZ-REEL7?
ADM660ARZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM660ARZ-REEL7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADM660ARZ-REEL7?
For technical support, including ADM660ARZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM660ARZ-REEL7 requirements.
6.How does Aetrix verify that ADM660ARZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADM660ARZ-REEL7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADM660ARZ-REEL7 meets industry standards.
7.What is the process for return or replacement of ADM660ARZ-REEL7?
All ADM660ARZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM660ARZ-REEL7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADM660ARZ-REEL7 part is unused and in its original packaging.
Return procedure for ADM660ARZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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